viewcvs.cgi/ray/p.c

#include <stdlib.h>
#include <stdio.h>
#include <malloc.h>

main( int argc, char *argv[])
{
        int s,mb,q,a;
        unsigned char *mem,b;

        if( argc != 2 ) {
          fprintf(stderr,"usage: p MB\n");
          return(1);
        }
        s= 1024*1024* (mb=atoi(argv[1]));
        if (!(mem=malloc(s))) {
          printf("failed\n");
          exit(1);
        }
        for (;;) {
          for (q=0;q<mb;++q) {
            a=q*1024*1024+ 1+(int)(1024*1024.0*rand()/(RAND_MAX+1.0)) ;
            b=255*rand()/(RAND_MAX+1.0);
            mem[a] = b;
            if( mem[a] != b ) 
                fprintf(stderr,"hopla %x\n", a);
          }
        }
          
        return(0);
        
}
Revision:	1.5
Committed:	Fri Feb 21 23:42:15 2003 UTC (22 years, 8 months ago) by apian
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+1 -1 lines
Log Message:	bla
#	User	Rev	Content
1	apian	1.1	#include <stdlib.h>
2			#include <stdio.h>
3			#include <malloc.h>
4
5			main( int argc, char *argv[])
6			{
7			int s,mb,q,a;
8			unsigned char *mem,b;
9
10			if( argc != 2 ) {
11			fprintf(stderr,"usage: p MB\n");
12	apian	1.4	return(1);
13	apian	1.1	}
14			s= 10241024 (mb=atoi(argv[1]));
15			if (!(mem=malloc(s))) {
16			printf("failed\n");
17	apian	1.5	exit(1);
18	apian	1.1	}
19			for (;;) {
20			for (q=0;q<mb;++q) {
21			a=q10241024+ 1+(int)(10241024.0rand()/(RAND_MAX+1.0)) ;
22			b=255*rand()/(RAND_MAX+1.0);
23			mem[a] = b;
24			if( mem[a] != b )
25			fprintf(stderr,"hopla %x\n", a);
26			}
27			}
28
29	greg	1.3	return(0);
30	apian	1.1
31			}